In this video you learn how to use random controller within surface controller to change the thickness of panels. Also you learn how to control the random values while using random controller on multiple properties/controllers.
For more information on random controller see also : Random pattern and noise effect in animation

surfaceController takes following arguments:surface:surface name –Name of object in 3ds Maxfeedback:transform/position/rotation –function returns transform matrix, position in point3 value and rotation in EulerAngles valueuOffset:offset value –Increase or decrease offset in U directionvOffset:offset value–Increase or decrease offset in V directionnormalOffset:offset value –increase or decrease the normal offsetmode:1 or 2 — set the controller in relative mode (2) or absolute mode (1)order:1 to 9— choose the order of rotation (items in drop down menu) works only when feedback is set to rotationdata:1 or 2 — use uv-mapping information (2) or NURBS evaluation functions (1)uv:1 or 2— choose the uv direction.surfaceID:index number— identify the surface index when works with nurbs object or choose the UV mapping channel when working with mapping information